HomeMy WebLinkAboutSEPA EPIC-53-91 - BOEING - 720,000 SF SPARES DISTRIBUTION WAREHOUSEBOEING COMMERCIAL
AIRPLANE -
SPARES DISTRIBUTION
WAREHOUSE & OFFICE
SEATAC INTERNATIONAL
AIRPORT - SO. 146T" ST. &
24T" AVE. SO.
EPIC 53 -91
City of Tukwila
PUBLIC WORKS DEPARTMENT
6300 Southcenter Boulevard
Tukwila, Washington 98188
(206) 433 -0179
Ross A. Earnst, P.E. Director
MEMORANDUM
TO: Jack Pace, Senior Planner
FROM: Ron Cameron, City Engineer
DATE: January 23, 1991
SUBJECT: Proposed Mitigated Determination of Non - Significance
File No. CZC- 0004 -90
Traffic is small, 800 UPD and "none" shown to Tukwila.
Drainage is O.K. - to west and northwest
RC /kjp
/94°'
A0V\."-
Michael Knapp
Director of Planning and Community Development
CITY OF SEATAC -19215 - 28th Avenue South - SeaTac, Washington 98188 - (206) 878 -9100
PROPOSED
MITIGATED
DETERMINATION OF NONSIGNIFICANCE
FILE NO. CZC- 0004 -90
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DESCRIPTION OF PROPOSAL: To construct a 720,000 square foot warehouse and accessory
offices for the storage and distribution of spare parts for Boeing airplanes. The proposed action
will include demolition of an existing warehouse building (42,000 sf) and grade/fill activities that
will generate approximately 450,000 cubic yards of excavation for site preparation. .
PROPONENT: Boeing Commercial Airplane Group /Division of Boeing
LOCATION OF PROPOSAL: Located at the Northwest corner of South 146th Street and 24th
Avenue South, SeaTac, WA
LEAD AGENCY: City of SeaTac
The responsible official of the City of SeaTac hereby makes the following Findings of Fact
based upon impacts identified in the environmental checklist and the `Final Staff Evaluation for
Environmental Checklist (Case No.CZC - 0004 -90), and Conclusions of Law based upon the City
of SeaTac Comprehensive Plan, and other Municipal policies, plans, rules and regulations
designated as a basis for the exercise of substantive authority of the Washington State
Environmental Policy Act Rules pursuant to R.C.W. 43.21C.060.
FINDINGS OF FACT:
1. The Proposed action includes demolition of a 42,000 square foot warehouse and the
construction of a warehouse/accessory office use of approximately 720,000 square feet.
2. The grade and fill activities generating approximately 450,000 cubic yards will generate
dust emissions and particulate. Additionally, the trucks used during these activities will
track mud, dirt and debris onto adjacent public streets if not adequately controlled.
3. The proposed development will generate additional storm drainage in the immediate
vicinity and downstream analysis is necessary to adequately protect adjacent properties.
4. The proposed action will contribute to traffic vol
signalization at South 144th Street and Des Moin
C753
JAN L41991
CITY OF TUKWILA
PLANNING DEPT. l
of traffic
al would
• •
improve existing poor levels to a improved level of B/C and improve access to SR -518.
The signal would also benefit the project traffic on 24th Ave S. and on residential streets
east of 24th Avenue South. The proposed action will impact additional intersections in
the immediate vicinity; those impacted intersections that will require mitigation are: 24th
Avenue South and 154th Street, International Boulevard (SR -99) and South 154th Street,
International Boulevard (SR -99) and State Route 518, and Des Moines Memorial Drive
and State Route 518.
5. The proposed action is located adjacent to a single family neighborhood and noise issues
will need to be resolved to mitigate noise impacts on the single family area and for the
workers within the building.
6. The size of the facility will create adverse impacts such as potential fire and explosions,
therefore, a fire protection systems shall be in place before actual construction begins on-
site. Additionally, to respond in a timely manner the Fire Department will need
additional opticom systems installed on the routes to the facility. Without such.additions
the facility could not be adequately served by the City Fire Department.
7. The "FINAL STAFF EVALUATION FOR ENVIRONMENTAL CHECKLIST FILE
No. CZC- 0004 -90" is hereby incorporated as stated in full and as an analysis of the
SEPA Checklist.
CONCLUSION OF LAW
1. In areas subject to erosion hazards, native ground cover should be retained or replaced
after construction, special construction practices should be used, and allowable site
coverage may need to be reduced to prevent erosion and sedimentation. Limitations on
the time when site work can be done may also be appropriate. (Policy E -307, King
County Comprehensive Plan(KCCP))
2. Prior to development in severe seismic hazard areas, builders should conduct special
studies to evaluate seismic risks and should use appropriate measures to reduce the risks.
(Policy E -309, KCCP)
3. Natural drainage systems should be maintained and enhanced to protect water quality,
reduce public costs and prevent environmental degradation. Public improvements and
private developments should not alter natural drainage systems without acceptable
mitigating measures which eliminate the risk of flooding or negative impacts to water
quality. (Policy E -314, KCCP)
4. Site plans and construction practices should be designed to minimize on -site erosion and
sedimentation during and after construction. (Policy E -318, KCCP)
5. In order to minimize on- and off -site impacts to adjoining residential neighborhoods, non-
residential uses should use a range of mitigating factors such as: Siting of work areas,
hours of operation, and limiting operations after dusk. (Policy ST -R3, STAU)
6. Water quality should be protected and enhanced. Land use plans and land development
should preserve the amenity and ecological functions of water features.(Policy E -311,
KCCP)
7. New Development should not increase peak stormwater runoff. In critical drainage,
erosion or flood hazard areas, new development should not increase total runoff quantity.
(Policy E -316, KCCP)
8. Manufacturing, Commercial, and Office developments within the SeaTac urban activity
center should occur concurrently with necessary road and drainage improvements to
reduce impacts on nearby residential areas. (Policy ST -CI4, SeaTac Area Update
(STAU))
9. Surface water runoff should be managed in a way that avoids environmental degradation
to Miller and Des Moines Creeks. (Policy ST -NR2, STAU)
10. Adequate landscaping and screening of non - residential uses that are visible or abut
residential uses is encouraged. (Policy ST -CI3, STAU)
11. Industrial development should be designed to be compatible with adjoining uses. Off -site
impacts such as noise, odors, light and glare should be prevented through pollution
control measures, setbacks, landscaping, and other techniques. Unsightly views of
parking, loading and storage areas should be screened from neighboring office, retail and
residential uses. (Policy CI -231, KCCP)
12. Fuel, Toxic chemicals, and other harmful substances should be stored in a manner that
avoids surface and ground water contamination. (Policy ST -NR6, STAU)
13. Uses of Port of Seattle Acquisition areas and other lands in the SeaTac Area should
enhance the residential character of the remaining neighborhoods. (Policy ST -R4, STAU)
14. Protect existing neighborhood streets from large influxes of non -local traffic. (Policy ST-
T2, STAU)
15. Identify, sign and enforce truck routes which can efficiently carry commercial and truck
traffic on arterial and highways to minimize the impact on residential neighborhoods.
(Policy ST -T16, STAU)
16. Industrial development should have direct access from arterial or freeways. Access
points should be combined and limited in number to allow smooth traffic flow on arterial.
Access through residential areas should be avoided. (Policy CI -232, KCCP)
17. The development review process should be used to secure rights -of -way and require
reasonable on -site and off -site construction of local and neighborhood transportation
facilities as a condition of approval when needed to adequately serve the development.
Off -site improvement requirements should be pro -rated according to project impact. .
.(Policy F -206, KCCP)
18. Individual developments should provide all on -site improvements needed to meet adopted
service standards for roads, sewage disposal, water supply, surface water management,
fire flow, public transit, neighborhood parks, open space. (Policy F -106, KCCP)
19. When the off -site capacity of roads, public sewer systems, public water systems and fire
protection systems is inadequate to meet adopted service standards, individual
developments should be deferred until these services area assured of being brought up
to standard by either the public entity involved or the developer, or some combination
of funding sources. If the deficient services cannot be brought up to standard, the
development should be denied. (Policy F -107, KCCP)
The lead agency for this proposal has determined that it does not have a probable significant
adverse impact on the environment, and an environmental impact statement (EIS) is not required
under RCW 43.21C.030(2)(c), only if the.following conditions are met. This decision was made
after review of a completed environmental checklist and other information on file with the lead
agency. This information is available to the public on request.
CONDITIONS:
1. A Temporary and Permanent Erosion Control Plan shall be submitted for ,review and
approval by the Public Works Director and Planning Director, prior to the issuance of
grading, construction or building permits. The plan shall include provisions and details
on detention pond locations, location of silt fences backed up by haybails, a designated
Construction access (limited to one), Truck washing facilities, and any other necessary
controls as directed by the Public Works and Planning Department.
2. All construction activity will be limited to weekdays (holidays and weekends excluded)
from 7:00 am to 6:00 pm. The hours may be revised after review by the Planning
Director and Public Works Director. Additionally, grading /fill and excavation activities
shall be limited to the dry season or as determined by the Building Official.
3. During grade /fill and construction activities, the applicant shall be required to water the
site as determined by the Building Official and Public Works Director and keep all
adjacent public streets clean at all times.
4. A temporary and permanent truck route shall be established, and approved by the Public
Works Director and Planning Director prior to issuance of any grading, construction or
building permits. The Plans shall include the following:
A. An approved construction access point for all truck traffic
• •
B. A route that will not impact adjacent Single Family neighborhoods.
C. The location for the excavated material from the site during grading and fill
activities.
D. A secondary emergency access point will be reviewed and approved by the
Building Official.
5. In accordance with King County 1990 Surface Water Design Manual, Storm drainage
analysis for on -site and downstream impacts shall be submitted for review and approval
by the Public Works Director. Prior to the issuance of any grading, construction or
building permits the following issues shall be resolved:
A. Drainage cannot discharge off -site into a private system without provisions for
operation and maintenance of the downstream system.
B. As noted, the downstream system also needs to be analyzed to insure it has the
capacity and can accept the rate of release.
C. To further improve water quality of the storm drainage runoff the . use of
absorption pads and three baffle vaults in oil /water separators will be required.
D. A storm drainage maintenance management plan shall be submitted for review
and approval by the Public Works Director.
6. A detailed landscape plan shall be submitted for review and approval by the Planning
Director and Building Official. The reviews and requirement are as follows:
A. Prior to issuance of any grading permits, a tree survey of existing trees,
trees to be removed and trees that will remain.
B. Prior to issuance of construction or building permits, the following shall
be submitted for approval:
1. A detail of type of the trees and location of proposed trees
and shrubs.
2. An irrigation plan for the landscaping.
3. Location of interpretive trail markers and text to be used on
markers.
C. A landscaping bond or acceptable financial guarantee shall be posted if the
landscaping is not installed prior to issuance of certificate of occupancy for 150%
of the replacement cost of the landscaping proposed. The bond shall be
maintained until all the landscaping is in place.
D. A maintenance bond or other acceptable financial guarantee shall be posted prior
to issuance of certificate of occupancy for 30% of the replacement cost of the
landscaping proposed. The bond shall be maintained for a three year period, at
which point the Building Official and Public Works Director will determine if the
bond shall be released or is needed for maintenance within the landscaped areas.
7. Prior to issuance of any building permits, a noise study shall be completed prior to
• •
issuance of building permits. The study shall include, but not be limited to the following:
potential and existing noise impacts within the interior of the facility and the exterior of
the facility, noise levels of the generators and nighttime noise levels shall be submitted
for review and approval of the Planning Director and Public Works Director. The study
shall include proposed mitigation measures, which the City of SeaTac will consider in
developing mitigation measures.
8. All on -site fuel tanks shall be located below ground with a leak detection and monitoring
systems as reviewed and approved by the Building Official and City Fire Department,
except that the emergency fire pump fuel source may be located pursuant to adopted
Building and Fire Codes.
9. Prior to issuance of any building permits, the project applicant (Boeing) shall provide
evidence of either (1) ownership of all site area proposed for development (including
landscape and parking areas): or (2) an agreement (Lease) between the two property
owners. At a minimum the lease agreement shall have a term or renewal. clause
acceptable to and approved by the Planning Director and Public Works Director, which
shall not be terminable without notice to the City. As an alternative, the applicant may
enter into an irrevocable agreement with the City to guarantee off -site parking in event
of termination of the aforesaid lease.
10. To reduce the glare and visual impact of the facility the following mitigating measures
shall be implemented:
A. No lighting of the building shall be directed off -site. All lighting fixtures
will be designed to reduce off -site glare. The type of exterior lighting
fixture shall be reviewed and approved by the Planning Director prior to
issuance of building permits.
B. The facility shall be painted in colors and patterns as approved by the Planning
Director prior to issuance of any Building Permits.
11. It is the intent of the City Administration to promote the orderly growth and development
of the City of SeaTac. The City will require that new growth and development pay a
proportionate share of the cost of new transportation facilities necessitated by the new
growth and development. To ensure that individual developments do not pay arbitrary
or duplicative fees for the same transportation related impacts, the City intends to
develop transportation impact fees. These fees will be based upon standards and shall
be imposed through established procedures and criteria.
The applicant, having submitted its project prior to the establishment of these
transportation impact fees, has prepared a traffic and transportation impact analysis
(hereafter referred to as the "traffic study ") and submitted this traffic study as Appendix
E to its SEPA Checklist. This traffic study is the basis for the creation of appropriate
mitigation for potential traffic impacts.
• •
The traffic study finds that five intersections in the vicinity of the project will be
impacted by the Spares facilities:
24th Avenue S. and S. 154th Street
State Route -99 and South 154th Street
State Route -99 and State Route 518
Des Moines Memorial Drive and South 144th Street
Des Moines Memorial Drive and State Route 518
From data included in the traffic study, project impacts have been calculated as a
percentage of project traffic to total traffic at the five intersections during peak hour.
Under this analysis, the project will have the following impacts:
INTERSECTION
Impact w/o
Signal at
Des Moines Mem.
Drive/S. 144th
Impact with
Signal at
Des Monies Mem.
Drive/S.144th
24th AveS. /S.154th St 12.5% 4.1%
SR- 99/S.154th St. 5.5% 1.9%
SR -99 /SR -518 4.4% 1.6%
Des.Moines Mem.Dr /S.144thSt. 2.8% 10.6%
Des.Moines Mem.Dr /SR -518 2.6% 10.3%
(westbound off -ramp)
Installation of a traffic signal at Des Moines Memorial Drive and South 144th has been
identified by the traffic study as the major improvement for area traffic. The City finds
the impacts of the project on area traffic to be adverse and requires the project proponent
to participate on a "fair share" basis to improvements at the five identified impacted
intersections. The applicant will participate by payment of a voluntary traffic mitigation
fee, calculated in accordance with this Condition 11. The "fair share" shall be based on
the percentage of project impact at the noted intersections. The City and applicant have
identified the estimated cost for improving two of the above intersections:
Intersection
Improvement Estimated Cost
24th Ave S. /S. 154th St. Left -Turn Lanes
Des Moines Mem. Dr /S. 144th St: Signalization/
Channelization
$75,000.00
$200,000.00
Preliminary determination for cost of improving the three remaining intersections would
be similar to the cost of improving Des Moines Memorial Drive and South 144th Street
($200,000.00 approximately). These estimated costs are in 1990 dollars and have been
inflated 15% on the table below to reflect expected costs in 1993 when the project will
be completed and the improvements installed. Applying the above - referenced
percentages for project impacts with the traffic signal, the applicant's "fair- share" of the
cost improvements are:
Intersection
24th Ave.S. /S. 154th St.
SR- 99/S.154th St.
SR -99 /SR -518
Des Moines Mem.Dr /S. 144th St.
Des Moines Mem.Dr /SR -518
(Westbound Off -ramp)
TOTAL ESTIMATED PROJECT IMPACT COST
% Impact
4.1%
1.9%
1.6%
10.6%
10.3%
Total Cost % Cost
$ 86,250.00
$230,000.00
$230,000.00
$230,000.00
$230,000.00
$ 3,536.00
$ 4,370.00
$ 3,680.00
$24,380.00
$23,690.00
$59,656.00
The City of SeaTac upon completion of its traffic and transportation study for the city
wide implementation of traffic impact fees, shall review its findings in comparison with
the applicant's traffic study. Should the City find that the project impacts with a signal
at Des Moines Memorial Drive and South 144th differ from those indicated in the traffic
study, it may at that time appropriately modify this Condition No. 11, provided that such
notice and appeal of any decision of modification shall be in accordance with WAC 197-
11, as adopted by the City of SeaTac.
12. The City of SeaTac has identified as a priority , a traffic signal with an opticom system
and channelization at South 144th and Des Moines Memorial Drive shall be installed.
The City of SeaTac with all available resources shall obtain any available transportation
funding to help defray cost of the required improvements.
Upon issuance of a building permit for the project, the City shall determine the total
amount of transportation improvement fund available for these improvements (noting the
applicant's "fair- share" contribution for these improvements). If the total amount of
transportation improvement funds available for these improvements are less then the
City's best estimate of the total cost of these improvements, the City will inform the
applicant in writing of such short fall in funding.
Upon receipt of such a written notice in short fall, the applicant shall be required to pay
to the City the additional amount necessary to fund the total cost for improvements at this
intersection. The City of SeaTac shall then proceed to undertake the improvements with
resources of its own choosing.
The portion of the total cost of the improvements to be borne by the applicant shall not
exceed its "fair- share" contribution. Upon issuance of a Certificate of Occupancy,
amounts paid in excess of the applicant's "fair- share" contribution to defray any short fall
in funding shall: (1) Be credited against the applicant's "fair- share" contribution for the
remaining four intersections identified in Condition No. 11; and (2) any remaining excess
funds shall be reimbursed to the applicant by the City when additional funds for the
improvements are obtained by the City.
• •
13. Property frontage improvements, adjacent to the project site including approved pavement
widths, will be required on South 146th Street, South 142nd Street, and 24th Avenue
South to include curbs, gutters, a planter strip with sidewalks, storm drainage, paving,
landscaping, and street lighting in accordance with adopted road construction standards,
as approved by the Planning and Public Works Director.
14. The adequacy of the sight distance issue on the west side of the site on South 142nd shall
be resolved in accordance with adopted road construction standards prior to issuance of
building permits and as determined by the Public Works Director.
15. Prior to issuance of an certificate of occupancy, "Local Access Only" signs shall be
placed at all residential streets which intersect with 24th Avenue South, those
intersections are as follows:
24th Avenue S/S 142nd Street
24th Avenue S/S 144th Street
24th Avenue S/S 146th Street
24th Avenue S/S 148th Street
24th Avenue S/S 150th Street
16. A Transportation Management Plan shall be submitted for review and approval by the
Planning Director, Public Works Director and METRO, prior to the issuance of a
certificate occupancy. The plan shall be designed on criteria established by METRO and
the City of SeaTac.
17. A copy of Boeing's proposed hazmat response teams and processes shall be submitted
to the City of SeaTac for review and approval by the Public Works Director and Fire
Chief prior to the issuance of any building permits.
18. Prior to any construction, as determined by the Public Works Director, the applicant will
be required to install opticom systems on the following intersections:
24th Avenue South /South 154th Street (4 -Way)
South 160th Street/State Route 99 (4 -way)
South 154th Street/State Route 99 (4 -way)
South 152nd Street/State Route 99 (2 -way)
The applicant's voluntary contribution to these improvements shall be determined by the
City prior to December 31, 1992, on a fair -share basis. However, because of the need
to promptly implement these improvements, the project applicant shall, upon issuance of
building permits for the project, contribute total amount of funds necessary to undertake
these improvements, said total to be determined by the City as its best estimate of such
cost. The City shall then proceed to undertake the improvements with resources of its
own choosing. The cost estimate shall be provided to the applicant, in writing, prior to
issuance of building permits.
• •
Funds paid by the project applicant in excess of its "fair - share" contribution shall be
reimbursed by the City in accordance with a "latecomer" funding procedure to be
developed and implemented by the City. The City's obligation to so reimburse the
project applicant shall be further reflected in appropriate documentation to be in a form,
and of content, satisfactory to the parties' respective legal counsels.
19. The applicant shall provide two source connections of adequate capacity to the site for
redundancy to the fire protection capabilities, as determined by the Public Works
Director. Additionally, fire hydrants shall be installed and operational prior to
construction (Framing) as approved by the Building Official and Fire Department.
20. At a minimum the applicant shall meet all recommended conditions stated in the
Geotechnical Report prepared by Dames & Moore, August 28, 1990 and as directed by
the Public Works Director.
COMMENT PERIOD
This MDNS is issued under WAC 197 -11- 340(2); the lead agency will not act on this proposal
for 15 days from the date of issuance. Comments must be submitted by 5:00 P.M. on January
�1
An appeal of this Mitigated Determination may be filed with the City of SeaTac City Clerk
within 10 days of issuance of a final determination. The final determination will be issued after
completion of the comment period and review of the comments to determine the need for
revisions or withdrawal of the proposed determination. Copies of the final determination,
specifying the appeals deadline, can be requested or obtained from Michael Booth, Land Use
Administrator at 878 -9100.
RESPONSIBLE OFFICIAL:
Michael Knapp, Director
POSITION /TITLE: Planning and Community Development Dept.
ADDRESS:
19215 28th Ave South
SeaTac, Washington 98188
(206) 878 -9100
DATE ISSUED: January 9, 1991 SIGNATURE
• •
CITY OF SEATAC
FINAL STAFF EVALUATION FOR ENVIRONMENTAL CHECKLIST
FILE NO. CZC- 0004 -90
PROJECT NAME: Boeing Spares Distribution Center
APPLICANT: Boeing Commercial Airplane Group /Division of Boeing
CONTACT: William Diefenderfer; TELEPHONE: (206) 544 -9790
LOCATION: Located at the Northwest corner of South 146th Street and 24th Avenue South.
S -T -R: Section(s) 16 and 21 - Township 23 - Range 4 E
Parcel(s) Size: 27.1 acres approximately
Proposal: To construct a 720,000 square foot warehouse and accessory offices for the storage and distribution
of spare parts for Boeing airplanes. The proposed action will include demolition of an existing warehouse
building (42,000 sf) and grade /fill activities that will generate approximately 450,000 cubic yards of excavation
for site preparation.
Existing Zoning: ML -P (Light Manufacturing w /conditions) & AOU -P (Airport Open Use w /conditions);
See attached Checklist for listed conditions.
Comprehensive Plan Designation: Urban (King County Comprehensive Plan - 1985)
Industrial (SeaTac Area Update - 1989)
A. Background: Pursuant to WAC 197 -11- 340(2), The City of SeaTac is required to send any DNS or MDNS
which may result from this environmental review, along with the checklist, to DOE, the U.S. Army Corps of
Engineers, Port of Seattle, and other agencies with jurisdiction, affected tribes, and other interested parties.
9. The previous owner of the site, Trammel -Crow, applied for environmental review of a proposed
manufacturing and business park project. King County issued a Determination of Non - Significance (TF-
89/060-6 SeaTac Business Park, 11/14/89). The present project is not considered similar in nature and
the above referenced King County DNS. cannot be adopted as the environmental document to satisfy
SEPA requirements for this project.
10. Presently two street vacations are in the review process and will need to be approved prior to issuance
of any grading, construction or building permits. Additionally, due to more than one ownership involved
on the subject site, an agreement of joint development, a renewable lease between the two parties, or
as an alternative, the applicant may enter into a irrevocable agreement with the City to guarantee off -site
parking in event of termination of the aforesaid lease is necessary, prior to the issuance of any grading,
construction or building permits. Any existing property lines that exist under present subdivisions or
plats shall be vacated as necessary.
• •
B. Environmental Elements
1. Earth:
The subject site, based on the Geotechnical Report prepared by Dames & Moore dated August 28, 1990,
consists of surface soils of silty sand, gravelly silty sand, and occasional cobbles, roots and organic matter.
Underlaying the surface soils is dense to very dense glacial outwash till.
Due to the composition of soils on -site and the amount of excavation and grading proposed a temporary and
permanent erosion control plan will be necessary to avoid adverse impacts. The adverse impacts range from
runoff leaden with silt and dirt to mud and debris being tracked onto adjacent public streets. Additionally, a
second soils study is being prepared by the applicant to confirm indications that liquefaction of soils would not
occur during seismic events.
The Geotechnical Report prepared by Dames & Moore recommends specific standards and measures for site
preparation, and cut and fill activities. These recommendations shall be reviewed and approved by the Public
Works Department prior to issuance of any grading, construction or building permits.
Substantive SEPA policies related to the proposed action include:
In areas subject to erosion hazards, native ground cover should be retained or replaced
after construction, special construction practices should be used, and allowable site
coverage may need to be reduced to prevent erosion and sedimentation. Limitations on the
time when site work can be done may also be appropriate. (Policy E-307, King County
Comprehensive Plan(KCCP))
Prior to development in severe seismic hazard areas, builders should conduct special studies
to evaluate seismic risks and should use appropriate measures to reduce the risks. (Policy
E-309, KCCP)
Natural drainage systems should be maintained and enhanced to protect water quality,
reduce public costs and prevent environmental degradation. Public improvements and
private developments should not alter natural drainage systems without acceptable
mitigating measures which eliminate the risk of flooding or negative impacts to water
quality. (Policy E -314, KCCP)
Site plans and construction practices should be designed to minimize on -site erosion and
sedimentation during and after construction. (Policy E -318, KCCP)
In order to minimize on- and off -site impacts to adjoining residential neighborhoods, non-
residential uses should use a range of mitigating factors such as: Siting of work areas, hours
of operation, and limiting operations after dusk. (Policy ST -R3, Sea Tac Area Update
(STAU))
• •
Based on these policies mitigation measures on erosion control, seismic hazard study, and hours of operations
will be required by Staff. The Grading and Building Plans are required to be structurally certified for
compliance with pertinent regulations by a registered engineer prior to issuance of any grading, construction
or building permits.
2. Air
Short term impacts on air quality will occur during construction and paving operations. Due to the size of the
proposed excavation phase, air -borne particulate and dust emissions will be generated by the earth- moving
equipment. In order to avoid excessive levels of dust emissions during the dry seasons, mitigating measures
will be necessary. Such measures include but are not limited to: watering of the site, sweeping of the adjacent
streets and landscaping as an integral part of the proposed development. Landscaping will assist in filtering
suspended particulates and air- pollution generated by auto /truck traffic.
Long term impacts on air quality will be from the site generated traffic. Public transportation measures are
discussed and considered under the transportation portion of the checklist evaluation. Use of alternative
transportation means will assist in reducing air emissions generated by automobile traffic.
Substantive SEPA policies related to the proposed action include:
Site plans and construction practices should be designed to minimize on -site erosion and
sedimentation during and after construction. (Policy E-318, KCCP)
3. Water
As with all paved, developed areas, the site will contribute some pollutants to ground and surface waters as
these will be washed off by storm drainage across the site. Pollutants which accumulate on paved surfaces
include heavy metals, petrochemicals and other substances. Some of these pollutants could be separated out
of the storm -water runoff to a certain extent, by installing baffle -type oil /water separators in the proposed storm
drainage system. The proposed bio- filtration will further separate out these pollutants. The roof drainage will
be required to filter through a baffle - oil /water separator prior to discharge off -site.
Substantive SEPA policies related to the proposed action include:
Water quality should be protected and enhanced. Land use plans and land development should
preserve the amenity and ecological functions of water features.(Policy E-311, KCCP)
Natural drainage systems should be maintained and enhanced to protect water quality, reduce
public costs and prevent environmental degradation. Public improvements and private
developments should not alter natural drainage systems without acceptable mitigating measures
which eliminate the risk of flooding or negative impacts to water quality. (Policy E-314, KCCP)
New Development should not increase peak stormwater runoff. In critical drainage, erosion or
flood hazard areas, new development should not increase total runoff quantity. (Policy E-317,
KCCP)
Manufacturing, Commercial, and Office developments within the SeaTac urban activity center
should occur concurrently with necessary road and drainage improvements to reduce impacts on
• •
nearby residential areas. (Policy ST -CI4, SeaTac Area Update (STAU))
Surface water runoff should be managed in a way that avoids environmental degradation to Miller
and Des Moines Creeks. (Policy ST -NR2, STAU)
The storm drainage system shall be submitted for review and approval by the Public Works director and
designed as directed by the Public Works Department.
4. Plants
The development will be required to provide on -site landscaping in accordance with the SeaTac Zoning Code.
Both South 142nd Street and 24th Ave South, will have sidewalks and landscaping improvements. Due to the
proximity of the site to a residential area to the east, adequate buffering will be necessary as noted under the
aesthetics section of this staff evaluation.
Substantive SEPA policies related to the proposed action include:
Adequate landscaping and screening of non - residential uses that are visible or abut residential uses
is encouraged. (Policy ST -CI3, STAU)
Industrial development should be designed to be compatible with adjoining uses. Off -site impacts
such as noise, odors, light and glare should be prevented through pollution control measures,
setbacks, landscaping, and other techniques. Unsightly views of parking, loading and storage
areas should be screened from neighboring office, retail and residential uses. (Policy CI -231,
KCCP)
5. Animals Concur with Checklist
6. Energy and Natural Resources Concur with Checklist
7. Environmental Health
Locating a 10,000; 5,000; and 1,000 gallon fuel tanks above ground is considered an environmental health
hazard. By locating the tanks above ground, leakage and monitoring systems will not be as extensive and if a
leak were to occur the surface water could become contaminated quickly and impact Miller Creek. As
evidenced in past spills from SeaTac Airport, the local creeks have been adversely impacted from fuel spills.
The City of SeaTac shall avoid a repeat of such occurrences. The City Staff considers underground fuel tanks
with leak detection and monitoring systems to be the best available technology to control fuel spills, avoid
above ground explosion and fires, and protect surface and ground water from immediate contamination.
Substantive SEPA policies related to the proposed action include:
Fuel, Toxic chemicals, and other harmful substances should be stored in a manner that avoids
surface and ground water contamination. (Policy ST -NR6, STAU)
8. Land and Shoreline Use Concur with Checklist
Subject Site: Warehouse and vacant areas
• •
North- Single Family Residences /Animal Kennels
South - Seattle Water Department Storage Tank
West - Industrial and Warehouse Uses
East- Single Family Residential Neighborhood
9. Housing Concur with Checklist
10. Aesthetics
The bulk of the building will be screened by proposed landscaping and by lowering the building into the
existing and proposed topography. In order to screen and reduce the visual impact of warehouse to adjacent
residential properties, the applicants will be required to submit the proposed colors and patterns for review and
approval prior to issuance of any grading, construction or building permits.
Substantive SEPA policies related to the proposed action include:
Uses of Port of Seattle Acquisition areas and other lands in the Sea Tac Area should enhance the
residential character of the remaining neighborhoods. (Policy ST -R4, STAU)
11. Light and Glare Concur with Checklist
12. Recreation Concur with Checklist
13. Historic and Cultural Preservation Concur with Checklist
14. Transportation
A traffic study was prepared by TDA, Inc., dated October 18, 1990, to evaluate existing traffic conditions and
impacts of the proposed development on surrounding streets. As noted in the traffic study, there will be some
impacts to existing level of services. The traffic impact form the proposed facility is expected to represent
12.5% of the total PM peak hour traffic at 24th Avenue /S. 154th Street. The impacts at the other intersections
will range from 5.5% of the PM peak hour volume at SR- 99/S.154th Street to 2.6% of PM peak hour volume
at Des Moines Memorial Drive/SR -518.
It is the intent of the City Administration to promote the orderly growth and development of the City of
SeaTac. The City will require that new growth and development pay a proportionate share of the cost of new
transportation facilities necessitated by the new growth and development. To ensure that individual
developments do not pay arbitrary or duplicative fees for the same transportation related impacts, the City
intends to develop transportation impact fees. These fees will be based upon standards and shall be imposed
through established procedures and criteria.
The applicant, having submitted its project prior to the establishment of these transportation impact fees, has
prepared a traffic and transportation impact analysis (hereafter referred to as the "traffic study ") and submitted
this traffic study as Appendix E to the SEPA checklist. This traffic study is the basis for the creation of
appropriate mitigation for potential traffic impacts.
The following intersections will be impacted by the Boeing Spares project:
• •
24th Avenue S. and S. 154th Street
State Route 99 and South 154th Street
State Route 99 and State Route 518
Des Moines Memorial Drive and South 144th Street
Des Moines Memorial Drive and State Route 518
Substantive SEPA policies related to the proposed action include:
Protect existing neighborhood streets from large influxes of non -local traffic. (Policy ST -T2,
STAU)
Identify, sign and enforce truck routes which can efficiently carry commercial and truck traffic
on arterial and highways to minimize the impact on residential neighborhoods. (Policy ST -T16,
STAU)
Industrial development should have direct access from arterial or freeways. Access points should
be combined and limited in number to allow smooth traffic flow on arterial. Access through
residential areas should be avoided. (Policy CI -232, STAU)
The development review process should be used to secure rights -of -way and require reasonable on-
site and off -site construction of local and neighborhood transportation facilities as a condition of
approval when needed to adequately serve the development. Off -site improvement requirements
should be pro-rated according to project impact. (Policy F -206, KCCP)
15. Public Services
Due to the type of proposed use and size of the completed structure fast response time by the City of SeaTac
Fire Department is important for the safety and welfare of the employee's, the structure and adjacent residential
neighborhood. The large size and operation of the spares facility will demand a significant amount of time
during construction inspections and later on annual inspections for alarms, aid calls, hazardous materials
response, etc. This, coupled with the minimum levels of manning on fire department apparatus, and the
number of alarms the Fire Department receives which require multiple unit responses, makes the need for rapid
emergency access extremely critical. To avoid adverse impacts in this area there is a need for increased
automated emergency response signalization (Opticom) systems, to maintain an acceptable response time;
therefore, the applicant shall be required to coordinate with the Building Department and City Fire Department
on the installation of the needed signalization ( Opticom) components at the following intersections:
24th Avenue South /South 154th Street (4 -Way)
South 160th Street/Pacific Highway South (4 -way)
South 154th Street/Pacific Highway South (4 -way)
South 152nd Street/Pacific Highway South (2 -way)
Substantive SEPA policies related to the proposed action include:
When off -site capacity of roads, public sewer systems and fire protection systems is inadequate to
meet adopted service standards, individual developments should be deferred until these services
• •
are assured of being brought up to standard by either the public entity involved or the developer,
or some combination of funding sources. If the deficient services cannot be brought up to
standard, the development should be denied.d (Policy F -107, KCCP)
16. Utilities
Construction for utility lines will be necessary in order to have adequate utilities to serve the proposed
development. These utilities will need to be in place prior to occupancy.
Substantive SEPA policies related to the proposed action include:
Individual developments should provide all on -site improvements needed to meet adopted service
standards for roads, sewage disposal, water supply, surface water management, fire flow, public
transit, neighborhood parks, open space. (Policy F -106, KCCP)
When the off -site capacity of roads, public sewer systems, public water systems and fire protection
systems is inadequate to meet adopted service standards, individual developments should be
deferred until these services are assured of being brought up to standard by either the public
entity involved or the developer, or some combination of funding sources. If the deficient services
cannot be brought up to standard, the development should be denied. (Policy F-107, KCCP)
C. Conclusion:
Based on this analysis, the proposal can be found to not have a probable significant adverse impact on the
environment if appropriate conditions are properly implemented pursuant to a Mitigated Determination of Non -
Significance (MDNS). Conditions of the MDNS are based upon impacts clearly identified within the
environmental checklist, attachments, and the above 'FINAL STAFF EVALUATION FOR
ENVIRONMENTAL CHECKLIST', and are supported by policies and regulations formally adopted for the
exercise of substantive authority under SEPA. The City reserves the right to review any future revisions or
alterations to the site or to the proposal in order to determine the environmental significance or non - significance
of the project at that point in time.
Prepared by: Michael Booth, Land Use Administrator
Jack Dodge, Land Use Supervisor
cc: Dan Simon, Building Official
Don Monaghan, Transportation Supervisor
Bruce Rayburn, Public Works Director
Jack Dodge, Land Use Supervisor
Mike Knapp, Planning Director
Jim Adsley, Fire Chief
• •
City of SeaTac
ENVIRONMENTAL CHECKLIST
Purpose of Checklist:
The State Environmental Policy Act (SEPA), chapter 43.21C RCW, requires all,
governmental agencies to consider the environmental impacts of a proposal before making
decisions. An environmental impact statement (EIS) must be prepared for all proposals with
probable significant adverse impacts on the quality of the environment. The purpose of this
checklist is to provide information to help you and the agency identify impacts from your
proposal (and to reduce or avoid impacts from the proposal, if it can be done) and to help the
agency decide whether an EIS is required.
Instruction for applicants:
This environmental checklist asks you to describe some basic information about your
proposal. Governmental agencies use this checklist to determine whether the environmental
impacts of your proposal are significant, requiring preparation of an EIS. Answer the questions
briefly, with the most .precise information known, or give the best description you can.
You must answer each question accurately and carefully, to the best of your knowledge.
In most cases, you should be able to answer the questions from your own observations or project
plans without the need to hire experts. If you really do not know the answer, or if a question does
not apply to your proposal, write "do not know" or "does not apply." Complete answers to the
questions now may avoid unnecessary delays later.
Some questions ask about governmental regulations, such as zoning, shoreline, and
landmark designations. Answer these questions if you can. If you have problems, the
governmental agencies can assist you.
The checklist questions apply to all parts of your proposal, even if you plan to do them
over a period of time or on different parcels of land. Attach any additional information that will
help describe your proposal or its environmental effects. The agency to which you submit this
checklist may ask you to explain your answers or provide additional information reasonably
related to determining if there may be significant adverse impact.
A. BACKGROUND
1. Name of proposed project, if applicable: Spares Distribution Center
•
2. Name of applicant: Boeing Commercial Airplane Group, a division of the Boeing
Company
3. Address and phone number of applicant and contact person:
Paul B. Crane
Environmental Controls Administrator
Facilities Environmental Eng.
Renton Division
Boeing Commercial Airplane Group
P. O. Box 3707, MS 63 -01
Seattle, Washington 98124 -2207
(206) 965-1170
4. Date checklist prepared: October 1990
5. Agency requesting checklist: City of SeaTac
6. Proposed timing or schedule (including phasing, if applicable):
The construction will occur in one phase, commencing with site preparation on March 18,
1990 and building construction on September 9, 1990. The facility is planned for
occupancy in March 1993.
7. Do you have any plans for future additions, expansion, or further activity related to or
connected with this proposal? If yes, explain.
No future additions or expansions are planned for this proposal. Boeing is seeking a site
in the vicinity of Sea Tac Airport for employee parking while travelling on company
business. A 10 -acre site adjacent to the proposed Spares Distribution Center has been
identified as a potential location, although the current tenant has an option to extend his
lease for five years. The parking lot would serve only employees from other Boeing
locations while travelling. No employees of the Spare Distribution Center would be
permitted to park in the longterm parking lot, and the projects are not related nor
connected in any way. Per WAC 197 -11 -060, the parking lot proposal would be
considered a separate project and would be analyzed under a separate SEPA review and
determination.
8. List any environmental information you know about that has been prepared, or will be
prepared, directly related to this proposal.
King County Community Planning, SeaTac Area Update EIS; City of Tukwila, SeaTac
Annexation Study; Boundary Review Board, SeaTac Incorporation Study; and the Port of
Seattle "Parking Facilities Expansion EIS ".
Each of the above documents presents information on transportation, land use, drainage
conditions that may be relevant to this project.
9. Do you know whether applications are pending for governmental approvals of other
proposals directly affecting the property covered by your proposal? If yes, explain.
Yes, the previous owner of the site, Trammel Crow, applied for environmental review of
a proposed manufacturing and business park project. King County issued a Declaration
of Non - Significance (TF- 89/06 -6 Sea Tac Business Park, 11/14/89). Boeing applied for
and was issued a Grading Permit by King County (C9000033). There is a pending
application for a Street Vacation (V -2058) before King County.
10. List any governmental approvals or permits that will be needed for your proposal, if
known.
Demolition Permit
Environmental Review
Construction Permit
Grading Permit
Fire Department Approval
Health Department Approval
Electrical Permit
Street Use Permit
PSAPCA Air Permit
Water Connection Approval
Water Availability Certificate
Sewer Availability Certificate
Sewer and Stormwater Connections
Surface Water Drainage Approvals
Street Vacations
FAA Approval
11. Give brief, complete description of your proposal, including the proposed uses and the
size of the project and site. There are several questions later in this checklist that ask you
to describe certain aspects of your proposal. You do not need to repeat those answers on
this page. (Lead agencies may modify this form to include additional specific information
on project description.)
The proposed Spares Distribution Facility will be a state -of- the -art warehousing
operation designed as the single facility for storing and distributing spare parts to owners
of Boeing airplanes throughout the world. Warehouse is the principal use with a small
amount of accessory office use. The facility will operate 24 hours per day with three
shifts. If the facility is operated at its designed capacity, a maximum of 250 employees
will be on site during the largest shift, with a total of 340 employees each day.
The project site is located within the SeaTac International Airport boundary as identified
in the King County SeaTac Area Update, and is zoned for warehouse use. The site is 27.1
acres in size and is currently used for warehousing and outdoor industrial storage. A
portion of the site contains a Port - condemned vacant single family house, surrounded by
dead or dying vegetation and blackberry bushes. The site also contains a few deciduous
trees and some mature conifers along 24th Avenue South.
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•
Up to 720,000 sq. ft. of warehouse and accessory office structure are planned for the site,
with sufficient on -site surface parking spaces. The project will require demolition of an
existing warehouse building (42,000 sq. ft.) and the house, and removal of an existing
container repair yard. The proposed project would develop '90% of the site, with a
landscaped buffer area along 24th Avenue South, South 146th Street and South 142nd
Street and frontage improvements along 142nd Street. Existing landscape material within
these landscape buffer areas will be retained to the extent possible and incorporated into
the landscape design. The landscaping is being planned to meet or exceed required
standards, to provide a visual amenity for the neighborhood, and to buffer possible noise
sources from the site. The design includes retaining the existing mature conifer trees. (A
site plan, elevations, and landscaping plan are submitted with this checklist.)
While the traffic impacts from this proposed facility are expected to be minimal, the
impacts have been analyzed in a traffic and parking study (see Appendix E). This study
proposes mitigation to address traffic impacts from the project, and a transportation
management plan.
12. Location of the proposal. Give sufficient information for a person to understand the
precise location of your proposed project, including a street address, if any, and section,
township, and range, if known. If a proposal would occur over a range of area, provide
the range or boundaries of the site(s). Provide a legal description, site plan, vicinity map,
and topographic map, if reasonably available. While you should submit any plans required
by the agency, you are not required to duplicate maps or detailed plans submitted with
any permit applications related to this checklist.
The project is located in the west half of Sections 16 and 21, Township 23, Range 4,
within the northern portion of SeaTac International Airport Boundary at the northwest
corner of South 146th Street and 24th Avenue South. (A vicinity map is submitted with
this checklist).
B. ENVIRONMENTAL ELEMENTS
1. Earth
a. General description of the site (circle one): Flat, rolling, hilly, steep slopes, mountainous,
other:
The ground surface slopes gently from south down to north, with site grades ranging from
approximately Elevation 435 near the southeast corner of the site to approximately
Elevation 400 along the Port of Seattle Buffer Zone at the north end of the site.
Approximately one -half of the site, covering the central and northeast portions of the site,
contains a tilt -up concrete structure surrounded by sand and gravel- surfaced parking,
access and yard areas. The remaining portions of the site are covered by grass, thick
brush and some trees. The Port of Seattle Buffer Area is heavily to semi - wooded.
4
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b. What is the steepest slope on the site (approximate percent slope)?
Along the Port of Seattle Buffer Zone in the northeast corner of the site there are some
small localized slopes of approximately 20 %.
c. What general types of soils are found on the site (for example, clay, sand, gravel, peat,
muck)? If you know the classification of agricultural soils, specify them and note any
prime farmland.
According to the SeaTac Area Update EIS, the northern portion of the planning area
where this site is located consists primarily of Alderwood gravelly sandy loam.
Alderwood soils are moderately well drained, gravelly sandy loam, approximately 27
inches thick. The soils are commonly used for urban development.
A soils report for this site, completed on August 28, 1990, is attached as Appendix A.
The study shows that site explorations encountered somewhat variable soil conditions
across the site. Surficial deposits of silty fine sand to sandy silt ranging in thickness from
1.5 feet to 5 feet were found in the southern half of the site. Surficial fill deposits in the
northern portion ranged from 1 to 9 feet and generally consists of sand with gravel, silty
sand, and sandy silt with occasional cobbles, roots and organic matter. Underlying the
surficial soils at all locations is dense to very dense glacial outwash and till.
d. Are there surface indications or history of unstable soils in the immediate vicinity? If so,
describe.
No. According to the SeaTac Area Update EIS, there are no Seismic Erosion or Landslide
Hazards on or near the site. The attached soils report specifies the methods to be
followed in site preparation, fill placement, and foundation construction. A second soils
study is currently being prepared to confirm indications that liquefaction of soils would
not occur during a seismic event.
e. Describe the purpose, type, and approximate quantities of any filling or grading proposed..
Indicate source of fill.
Approximately 80% of the Port of Seattle Buffer, along 24th Avenue SE and SE 142nd,
will be cleared to provide parking and circulation. The Buffer area is marked on the site
plan. The site will be graded to slope from south to north. The largest cuts will be
approximately 28 feet near the southeast corner of the structure shown on the site plan.
The largest fills will be approximately 14 feet in the parking lot along South 142nd Street
to fill a deep depression in the northeast corner of the site. Structural fills on the north
end of the site will be generated from cuts on the south end of the site. Approximately
450,000 cubic yards of excavation will be generated during site grading for the building
pad. It is anticipated that a majority of excavated material will be removed from the site.
For a graphic description of the above referenced areas, please see the Landscape Site
Plan. (A preliminary grading and drainage plan is submitted with this checklist.)
5
f. Could erosion occur as a result of clearing, construction, or use? If so, generally describe.
g.
No. The majority of the site will remain relatively flat after the completion of the
grading for building construction. The grade changes between building and parking and
buffer areas will be addressed with rock walls and landscaping, eliminating the potential
for erosion. Erosion control during construction is described in Section B.1.h. below.
About what percent of the site will be covered with impervious surfaces after project
construction (for example, asphalt or buildings)?
Approximately 90% of the site will be covered with impervious surfaces at the completion
of the project.
h. Proposed measures to reduce or control erosion, or their impacts to the earth, if any:
Erosion and sedimentation control will be provided during construction and will utilize
measures to disperse flows so that concentration of outflows does not occur. Construction
will be phased so that effective control of runoff can be achieved. Some of the control
measures that will be used includ6emporary ditches, siltation fencing, sediment traps and
quick stabilization of denuded area ?lows will be regulated to minimize the volume of
fines leaving the site. Total solids have not been estimated.
2. Air
a. What types of emissions to the air would result from the proposal (i.e., dust, automobile,
odors, industrial wood smoke) during construction and when the project is completed?
If any, generally describe and give approximate quantities if known.
Normal construction activities will temporarily increase the amount of dust in the, air.
Trucks and heavy equipment used during construction will emit fumes and odor in the air.
Once developed there will be truck traffic using the site, similar to what currently exists.
There will also be some increase in auto traffic due to the increase in activity on the site.
The operation includes manufacturing wood boxes for shipping, Wood dust from this
operation will be collected in a state -of- the -art baghouse. A paint booth with a dry filter
system will be used as the need arises. Two diesel backup generators with residential
grade mufflers will function in the event of a power loss. The systems have been designed
to meet or exceed PSAPCA standards and the impact of these activities on air quality is
expected to be minimal.
6
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b. Are there any off -site sources of emissions or odor that may affect your proposal? If so,
generally describe.
There is a trucking company an d a towing service directly west of the site. Trucks from
these uses are existing sources of emissions and /or odor as are cars using 24th Avenue
South, an arterial. Neither will cause a problem for this project.
c. Proposed measures to reduce or control emissions or other impacts to air, if any:
During construction, watering to control dust will be undertaken as necessary to control
migration of air borne dust off -site, and wheels of construction vehicles will be washed
prior to leaving the site. The operations include both a state -of- the -art baghouse for
collection of wood dust from the assembly of wood shipping boxes, and a state- of -the-
the -art dry filter system for the paint booth. The paint booth is a spray paint booth down
draft design. The average overspray removal efficiency is 99 %. The paint booth will not
be used n a regular basis, only as need arises. These systems have been designed to meet
or exceed PSAPCA standards, and will control air quality impacts. The existing site
conditions are mostly dirt and the overall improvement of the site, with buildings and
parking areas and improved landscaping will reduce airborne dust over the long -term.
3. Water
a. Surface:
1) Is there any surface water body on or in the immediate vicinity of the site (including
year -round and seasonal streams, saltwater, lakes, ponds, wetlands)? If yes, describe type
and provide names. If appropriate, state what stream or river it flows into.
No
2) Will the project require any work over, in, or adjacent to (within 200 feet) the
described water? If yes, please describe and attach available plans.
No
3) Estimate the amount of fill and dredge material that would be placed in or removed
from surface water or wetlands and indicate the area of the site that would be affected.
Indicate the source of fill material.
None
4) Will the proposal require surface water withdrawals or diversions? Give general
description, purpose, and approximate quantities if known.
No
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4
5) Does the proposal lie within a 100 -year floodplain? If so, note location on the site
plan.
No
6) Does the proposal involve any discharge of waste materials to surface water? If so,
describe the type of waste and anticipated volume of discharge.
The only waste materials anticipated to be discharged from the site are silts from
earthwork operations and petroleum distillates from the parking lots after completion of
the project. Erosion and sedimentation control will be provided during construction and
will utilize measures to disperse flows so that concentration of outflows does not occur.
Construction will be phased so that effective control of runoff can be achieved. Some of
the control measures that will be used include temporary ditches, siltation fencing,
sediment traps and quick stabilization of denuded areas. Flows will be regulated to
minimize the volume of fines leaving the site. Total solids have not been estimated.
Biofiltration beds and oil separators will be utilized to mitigate petroleum distillate
discharge offsite. These systems are described at Section B.3.d. below.
b. Ground:
1) Will ground water be withdrawn, or will water be discharged to ground water? Give
general description, purpose, and approximate quantities if known.
No ground water will be withdrawn, and no water will be discharged directly to ground
water. Water will be discharged to surface water as described in c.1. below.
2) Describe waste material that will be discharged into the ground from septic tanks or
other sources, if any (for example: Domestic sewage; industrial, containing the following
chemicals ... ; agricultural; etc.). Describe the general size of system, the number of such
systems, the number of houses to be served (if applicable), or the number of animals or
humans the system(s) are expected to serve.
None
c. Water runoff (including stormwater):
1) Describe the source of runoff (including storm water) and method of collection and
disposal, if any (include quantities, if known). Where will this water flow? Will this
water flow into other waters? If so, describe.
The site drains to the north as a tributary to Miller creek and within the Miller Creek
drainage basin. The only source of water at the site results from precipitation. Runoff
from areas outside of the site does not enter the area. Runoff from the site currently
8
drains to two outfall locations. Approximately 12.5 acres in the southern section of the
site drains to the north and west via sheet flow. The runoff is collected in a small
drainage swale and discharged to the west into the storm drainage system located at the
Viking Trucking Company.
The remainder of the site drains to the north via sheet flow and shallow concentrated
flow. A drainage swale located south of South 142nd Street collects and directs runoff to
a 12 inch diameter culvert crossing under South 142nd Street. (A preliminary drainage
plan is being submitted with this checklist.)
2) Could waste materials enter ground or surface waters? If so, generally describe.
No, storm water will go through an oil separator and biofiltration system before it enters
surface and ground waters. Erosion control measures will control silt exiting from the site
during construction.
d. Proposed measures to reduce or control surface, ground, and runoff water impacts, if any:
The developed site will have approximately 15.3 acres of roof drainage and approximately
9.0 acres of vehicular parking /storage area. Two approaches controlling water impacts
are currently being studied: (1) a baseline approach; and (2) an alternative system. •
In the baseline approach, the drainage system will utilize a single drainage to convey and
detain storm runoff. The drainage from the vehicular parking areas and the northern
portion of the roof drainage will travel via a sheet and gutter flow into catch basins where
runoff will enter storm drains. The storm drains convey the water to an oil separation
system which will remove oil and grease contaminants. Water will then enter into an
underground concrete detention structure and be detained as needed to meet pre -
development flows. After detention, the water will enter into a 20 ft. x 200 ft.
biofiltration swale located at the northern end of the site.
The biofiltration swale will have a vegetative cover and gently bottom slope that will allow
for flow depths up to 4 inches. The discharge from the swale will enter a culvert crossing
under South 142nd St. at the current outfall locations. The use of oil separation along
with biofiltration should ensure that the downstream water quality is not impacted.
The remainder of the roof drainage which consists of the southern portion of the highway
area will be directed into a separate drain system. This system will convey water to an
underground detention pipe where flows will be detained to match the pre - development
flow rates. Discharge from the detention pipe will be conveyed to the western outfall
locations.
An alternative to the baseline approach is being evaluated which would .utilize separate
drainage systems to convey and detain storm runoff. Only the drainage from the
vehicular parking areas will travel via sheet flow into catch basin where runoff will enter
9
A
storm drains. These storm drains will convey water to an oil separation system which will
remove oil and grease contaminants. Water will then enter into a detention structure as
needed to meet pre - development flows. After detention the water will enter into a 20 ft.
x 200 ft. biofiltration swale located at the northern end of the site.
The biofiltration swale will have a vegetative cover and gentle bottom slope that will allow
for flow depths up to 4 inches. The discharge from the swale will enter a culvert crossing
under South 142nd St. at the current outfall location. The use of oil separation along with
biofiltration will ensure that the downstream water quality is not impacted.
The runoff from roof areas will not be exposed to oil /grease contaminants or sediment
loads. Water quality measures such as oil separators or biofiltration swales will not be
needed as runoff from the roof areas should not be impacted. Detention of runoff from
the roof areas will be provided as needed to match the pre - development flow rates.
As in the baseline approach, the roof drainage from the site will be segregated into
separate conveyance and detention systems. Approximately 3.0 acres of roof drainage will
be conveyed and detained to pre - development flow rates with discharge occurring at the
current western outfall. The remainder of the roof drainage will be conveyed to
underground detention structures located at the northeast and northwest portions of the
site. Discharge will be routed to the culvert crossing under South 142nd St. where it will
combine with discharge from the biofiltration swale.
4. Plants
a. Check or circle types of vegetation found on the site:
X deciduous tree: maple, cherry
X evergreen tree: douglas fir
X shrubs
grass
pasture
crop or grain
wet soil plants:
_ water plants:
X other types of vegetation: blackberry bushes
b. What kind and amount of vegetation will be removed or altered?
Existing trees within 10' of property line along 24th Avenue, including several mature
conifer trees, will be retained wherever possible and incorporated into the proposed
landscaping plan. All remaining vegetation will be removed for building construction,
parking and circulation.
10
•
c. List threatened or endangered species known to be on or near the site.
None
d. Proposed landscaping, use of native plants, or other measures to preserve or enhance
vegetation on the site, if any:
The site will be landscaped around the perimeter, especially in the designated buffer area
along 24th Avenue South and South 142nd Street. More specifically, the landscaped area
within the buffer and adjacent to the street edge on 24th Avenue South and South 142nd
Street will be a minimum width of 25 feet and will meet or exceed King County type II
landscaping standards. Existing plantings will be left in the buffer area whenever possible
to emphasize a "mature" planting scheme. Proposed plantings will utilize large caliper or
container plants to reinforce the "mature" planting scheme. The intent of the landscaping,
as illustrated on the site plan, elevations and sections, will be to minimize the impacts of
the building and associated on -site traffic to the adjacent residential area. (A landscaping
plan is being submitted with. this checklist.)
5. Animals
a. Circle any birds and animals which have been observed on or near the site or are known
to be on or near the site:
X birds: songbirds, crows
X mammals: rabbit, mice, voles, shrews
fish: no water bodies on site
b. List any threatened or endangered species known to be on or near the site.
None
c. Is the site part of a migration route? If so, explain.
No
d. Proposed measures to preserve or enhance wildlife, if any:
The adjacent residential area and noise from SeaTac Airport limit the area's potential for
wildlife habitat. Species observed at the site are ubiquitous to urban environments. Most
of the site contains overgrown blackberry vines with some conifers and fruit trees.
Existing vegetation will be replaced with landscaping on the perimeter of the site, which
will potentially increase bird habitat.
11
6. Energy and natural resources
a. What kinds of energy (electric, natural gas, oil, wood stove, solar) will be used to meet the
completed project's energy needs? Describe whether it will be used for heating,
manufacturing, etc.
Natural gas will be used for heating. Electricity will be used for interior and exterior
lighting, material handling equipment, shop equipment, and a minimal amount of
computer use in the office support area. Two diesel backup generators will function in
the event of a power loss. Boilers will be alternatively fueled with heating oil.
b. Would your project affect the potential use of solar energy by adjacent properties? If so,
generally describe.
No
c. What. kinds of energy conservation features are included in the plans of this proposal?
List other proposed measures to reduce or control energy impacts, if any
The project will meet the requirements of the King County Energy Code.
7. Environmental. health
a. Are there any environmental health hazards, including exposure to toxic chemicals, risk
of fire and explosion, spill, . or hazardous waste, that could occur as a result of this
proposal? If so, describe.
The facility will store fuel to be used for emergency generators and heating sources, and
a limited amount of hazardous materials and waste, in the form of paint, cleaning
products and adhesives. See attached list in Appendix C.
The fuel will be stored in three above -grade storage tanks located outside of the building:
A 10,000 gallon tank will be used to store #2 fuel, to be used as a backup heating source.
Diesel fuel, for the emergency generators, will be stored in one 5,000 gallon and one 1,000
gallon storage tanks.
As noted on the list, paints, lubricants and adhesives are contained in five gallon, one
gallon, and smaller containers; as well as aerosol cans. The greatest usage will be in the
paint booth, with uses such as spray paint for stenciling heavy crates. The usage volume
is estimated at approximately eight gallons per week. Hazardous wastes, consisting of
used rags and empty containers, will be collected in 55 gallon drums or covered tubs for
disposal. The crating operations will also use chemicals used in foam -in -place
applications. Two 55- gallon drums are typically stocked, along with a variety of solid
foam packaging materials. The facility will also contain explosive actuators used in such
assemblies as emergency exit slides.
12
• •
1) Describe special emergency services that might be required.
We do not anticipated the need for special emergency services. The amount of hazardous
materials stored on site is limited, and procedures for safe use are regularly followed.
While an emergency is not likely, should a spill occur, Boeing would respond with its own
Hazardous Materials Response Team. The HAZMAT Team is available to all Boeing
facilities and is on -call 24 hours a day to react immediately with state -of- the -art
equipment, to any chemical emergency that may occur. The HAZMAT Team trains
regularly with area fire departments and medic units.
2) Proposed measure to reduce or control environmental health hazards, if any:
Supplies of the hazardous and flammable materials will be consolidated into a 400 -600
square foot H -rated hazardous and flammable storage area. This storage area will be
located adjacent to the paint booth, the majority user of the materials. There may be very
limited amounts of materials at other points of use, but storage would be strictly
controlled through Boeing's internal procedures for handling hazardous materials. These
procedures comply with DOE and EPA standards.
b. Noise
1) What types of noise exist in the are which may affect your project (for example:
traffic, equipment, operation, other)?
The project site is within the boundary of the SeaTac Airport and the flight path for
airplanes using the Airport. As such, noise levels related to airplanes are high. According
to the map on page 19 of the SeaTac Area Update, noise levels at the site are 75 ldn (the
term ldn refers to average day /night noise levels).
Land use restrictions have been placed on the property due to the noise and safety issues
associated with the Airport. These restrictions are discussed under the land use section
of this checklist.
The homes directly to the east of the site are within the boundaries of the Neighborhood
Reinforcement Area as designated by the Port of Seattle Noise Remedy Program.
2) What types of levels of noise would be created by or associated with the project on a
short -term or a long -term basis (for example: traffic, construction, operation, other)?
Indicate what hours noise would come from the site.
The site is currently being studied by a noise consultant to determine the type and extent
of noise that will occur on site during operation. During construction there will be some
noise from heavy equipment, and efforts will be made to limit such use to normal working
13
• •
hours to minimize impacts on local residences. After the project is completed, the source
of noise is will be mainly from the trucks and automobiles using the site. Internal noise
associated with the warehouse is anticipated to be minimal. Although the facility will
operate 24 hours per day, the major work force will be on site from 7:00 a.m. to 3:30 p.m.,
and the major noise from vehicular movement will occur during those hours.
3) Proposed measures to reduce or control noise impacts, if any:
As noted above, a noise consultant is currently studying the site and will be reviewing the
landscaping and building exterior design to determine if revisions need to be made to
enhance the noise mitigating properties of the materials. A landscaped berm is proposed
along the east boundary of the site, providing a buffer from on -site noise. In addition,
the finished floor elevation established for the Warehouse is approximately 409. This
recesses the on -site truck circulation associated with the warehouse 15 to 22 feet below
existing grade along 24th Avenue.
The noise consultant will establish requirements and methods for controlling building
reflection of aircraft noise and specify acoustic designs for outdoor activities (acoustical
treatment, siting, barriers, partial enclosures, etc.) The recommendations presented in the
final report will be utilized in the final design of the site and building. The scope of the •
noise study is included as Appendix D.
8. Land and shoreline use
a. What is the current use of the site and adjacent properties?
There is one warehouse with outdoor storage operating on the site. The outdoor areas
currently store inoperable trucks. Some household dumping has occurred on various
portions of the site and surrounding area.
The property directly to the south of the site is used by the Seattle Water Department for
a water storage tank. The property adjacent to the site along the west boundary is
developed with industrial and warehouse uses. Single family homes are located in the area
to the east of the site. Currently, there are animal kennels and single family homes in the
portion of the future park area along 24th Avenue South.
b. Has the site been used for agriculture? If so, describe.
Not for many years, if at all.
c. Describe any structures on the site.
There is one 42,000 sq. ft. warehouse on the site and one Port of Seattle condemned vacant
single family dwelling.
14
•
d. Will any structures be demolished? If so, what?
The future phases for the property includes demolition of the existing warehouse, single
family dwelling and removal of an existing container repair yard.
e. What is the current zoning classification of the site?
The SeaTac Update Area Zoning designates the majority of the property Light
Manufacturing (ML -P). Zoning within 150 feet of the centerline of South 142nd Street
and 24th Avenue South is Airport Open Use (AOU -P).
The P- suffix for the ML classification imposes the following conditions on the zone, all
of which are being met by the proposal:
1. The area is subject to the California Department of Transportation "Airport Land
Use Planning Handbook." The handbook recommends limitations on uses such as
hotels, shopping centers, hospitals, etc. which expose large numbers of people to
aircraft crash hazards, but does not include warehouse uses.
2. No General Commercial (CG) Zone uses are permitted. This proposal does not
contain CG uses.
3. Outdoor storage of material cannot exceed 30 feet in height. No permanent
outdoor storage is proposed at this site.
4. Warehousing uses are permitted in this zone. The proposed facility is a warehouse
use.
5. Business and professional offices are allowed when accessory to the principal use.
The proposed project contains an office component which is accessory to the
principal warehousing use.
6. Trucks shall not use residential streets. (Residential streets are identified by King
County Ordinance 8899 as those lying between 24th Avenue South, a designated
truck route, and Military Road, which is located several blocks to the east.) Per
the Traffic and Parking Study included as Appendix E, truck traffic will not use
residential streets.
The P- suffix for the AOU classification imposes the following conditions on the zone:
1. A minimum of Type II Landscaping, 20 feet deep along street frontages. The
proposed landscaping for the project meets or exceeds the Type II standards.
2. The remainder of the site may be used for airport compatible land uses permitted
by the AOU Zone. Uses and buildings accessory to warehouse uses are permitted
in the AOU Zone. The proposed warehousing facility conforms to this
requirements and also conforms to the use and bulk provisions of the SeaTac Area
Update Zoning, including the site specific AOU P- suffix conditions.
The proposed warehouse facility conforms to the use and bulk provisions of the SeaTac
Area Update Area Zoning, including the site specific P- suffix conditions.
15
• •
f. What is the current comprehensive plan designation of the site?
1985 King County Comprehensive Plan - Urban
The SeaTac Area Update identifies land uses are Industrial and Open Airport Uses.
The following SeaTac Area Update Policies are applicable:
Areawide P- suffix conditions establish specific road improvements for development along
local streets, arterials, and state routes within the planning area. The proposed project
will comply with all applicable road improvement requirements.
In addition, specific road and signalization improvements are proposed to mitigate traffic
impacts associated with this project. Refer to the appended traffic study for details.
Specific Policies pertinent to this site are:
"ST -R2: Residential Neighborhoods that are not part of the Port of Seattle's Acquisitions
program should be protected from further impacts resulting from adjacent non - residential
uses."
Response: The property is currently developed with an aging warehouse /accessory
office building, outdoor container storage area and other dilapidated structures.
Truck access to the facility is from 24th Avenue, directly across the street from
an established single family zone. The combination of poor security, truck traffic,
noise, dust, and dilapidated structures currently adversely impact the adjacent
residential neighborhood.
The proposed project includes a larger building than is currently located on the
site, but will reduce many of the negative impacts associated with the present site
usage. Proposed impact mitigation include providing a secure, landscaped
perimeter, re- orienting present traffic ingress and egress driveways from 24th
Avenue South to non - residential block fronts on South 142nd and South 146th
Streets, excavating the center portion of the site behind the landscape buffer so
that driveway aisles, loading docks and vehicle noise can be located below existing
grade and below the line if sight from adjacent residences. Lowering driveways
and loading docks below existing grade also mitigates noise impacts associated
with truck traffic and loading activities. Street and intersection improvements
associated with the project will benefit the adjacent residential neighborhoods as
well as the project site.
"ST -R3: In order to minimize on -site and off -site impacts to adjoining residential
neighborhoods, non - residential uses should use a range of mitigating factors such as: siting
of work areas, hours of operation, and limiting operations after dusk."
16
Response: Project features designed to minimize impacts to nearby residential
neighborhoods include: planting and maintaining dense perimeter landscaping
along 24th Avenue South, eliminating vehicular access from 24th Avenue South;
lowering of finished grade to locate trucks and loading docks below the view from
adjacent residences; locating and shielding evening lighting to prevent light and
glare from extending beyond project boundaries; and other mitigation measures
described throughout this checklist.
Truck and car traffic will enter and exit the site from a driveway located in South
142nd Street. While the facility will operate on a 24 hour per day schedule, most
truck traffic will occur during daytime hours. Truck deliveries to and from the
site in the evening and middle of the night are infrequent. Auto traffic will also
be greatest during daytime hours because fewer employees will work at the
facility during the evening and night shifts. Refer to the traffic study for
information about daytime vs nighttime traffic characteristics.
"ST -T16: Identify, sign and enforce truck routes which can efficiently carry commercial
and truck traffic on arterials and highways to minimize the impact on residential
neighborhoods."
Response: The traffic study trip distribution analysis indicates that project related
truck traffic can be confined to commercial arterials and designated truck routes.
Roadway and signalization improvements, described in the traffic study, will
allow commercial arterials to more efficiently absorb project traffic.
"ST -NR13: Future development adjacent to wetlands should not degrade their natural
hydraulic, wildlife or recreational functions."
Response: The proposed project is not adjacent to wetlands; however, it is within
the Miller Creek and Tubbs Lake drainage basin. To prevent any degradation of
the natural hydraulic function, storm water will be collected and detained on -site,
with controlled release through on -site biofiltration swales, into the existing
drainage course.
"ST -A3: Land uses in the acquisition areas should reflect a balance of: (a) support for
airport activities; (b) open space and recreation; (c) compatibility with surrounding
community; and (d) economic development."
Response: The site was selected by Boeing for a parts distribution center because
of proximity to SeaTac Airport and the air transit services offered at the airport.
The site is across the street from a developing City park which is also located in
the acquisition area. The low activity level associated with this project, when
compared to the previously proposed North SeaTac Business Park, combined with
the impact mitigation measures proposed, make this project compatible with the
17
g.
• •
surrounding community. The project provides economic development for the
area.
"ST -A4: Land uses in airport clear zones will conform to Federal Aviation Administration
(FAA) regulations which prohibit structures in runway clear zones."
Response: The project is subject to FAA regulatory review and permit approval.
All FAA regulations must be satisfied and are being met by the proposal. The
project is not located within a runway clear zone.
"Comprehensive Plan F -240: Airport approach zones should be oriented to minimize
hazard and nuisance to present and potential adjoining land uses. Whenever possible, the
approach zones of airports and heliports should be over water, land uses such as
greenbelts, plant nurseries or low- intensity industries such as warehousing."
Response: The proposed project is a warehouse and therefore conforms to this
comprehensive plan policy.
If applicable, what is the current shoreline master program designation of the site?
N/A
h. Has any part of the site been classified as an "environmentally sensitive" area? If so,
specify.
No. As indicated on page 51 of the Draft EIS for the SeaTac Area Update there are no
seismic, erosion, landslide or 100 year flood hazards on the site, nor are there streams or
wetlands.
i. Approximately how many people would reside or work in the completed project?
j•
The facility will operate with three shifts. If the facility operates at the full design
capacity, the facility will employ:
Shift 1 (7:00 a.m. - 3:30 p.m.) 250 employees
Shift 2 (3:30 p.m. - 12:00 a.m.) 75 employees
Shift 3 (12:00 a.m. - 7:00 a.m.) 15 employees
TOTAL EMPLOYEES 340
Approximately how many people would the completed project displace?
None
18
• •
k. Proposed measures to avoid or reduce displacement impacts, if any:
None
1. Proposed measure to ensure the proposal is compatible with existing and projected land
uses and plans, if any:
The site is currently and will in the future be developed with warehouse and accessory
office uses, uses which are allowed within existing zoning codes. Landscape buffers are
provided, which meet or exceed King County type II landscaping standards, between
adjacent residential zones.
9. Housing
a. Approximately how many units would be provided, if any? Indicate whether high,
middle, or low- income housing.
None. The employees for the proposed project currently work at the Auburn Boeing
facility and would be transferred. The proposed facility is within commuting distance and
it is not anticipated that these employees would relocate to SeaTac area housing.
b. Approximately how many units, if any, would be eliminated? Indicate whether high,
middle, or low- income housing.
One Port of Seattle - condemned vacant single family dwelling.
c. Proposed measure to reduce or control housing impacts, if any:
None
10. Aesthetics
a. What is the tallest height of any proposed structure(s), not including antennas; what is the
principal exterior building material(s) proposed?
Sixty -nine (69) feet from finished floor elevation at the southern end of the structure.
Forty -five (45) feet or less from finished floor over a majority of the mid bay structure.
Approximately fifteen (15) mechanical penthouses, located on the mid bay roof, will be
fifty -six (56) from finish floor. Exterior building materials will be insulated, high quality
colored and ribbed metal panels.
b. What views in the immediate vicinity would be altered or obstructed?
Views of the site will be improved. There is currently one warehouse structure on the
site, and the rest of the site is vacant and covered with unattended vegetation, dirt, and
19
• •
outdoor storage. The landscape buffer area was once planted, but much of the vegetation
has died or is in disrepair. The proposed landscaping will greatly improve these views
through the use of evergreens, deciduous trees, and flowering plants.
c. Proposed measures to reduce or control aesthetic impacts, if any:
Through the redevelopment of the site, interior site cleanup will be extensive. The
vacated and boarded up houses sitting on the southeast corner of the site will be removed,
garbage dumping will be eliminated, and the container storage area at the northeast corner
of the site will eventually be eliminated. In addition, parking areas will be paved and
landscaped and the buffer area will be replanted with high quality plantings. A landscape
maintenance program will be initiated to ensure all landscaping remains healthy and well -
kept. Due to the finished floor elevation of the proposed building, the height of the
proposed structure will be reduced in relation to existing grades. The building itself will
be covered with a high quality colored and ribbed metal siding.
11. Light and glare
a. What type of light or glare will the proposal produce? What time of day would it mainly
occur?
The building will include outdoor lights at dock entrances, and in the parking lots from
sunset to sunrise. The landscape buffer area will screen outdoor lighting from the
adjacent areas.
b. Could light and glare from the finished project be a safety hazard or interfere with views?
No
c. What existing off -site sources of light or glare may affect your proposal?
There are street lights on 24th Avenue South and South 142nd Street. There are outdoor
lights on the warehouse property to the west of the property.
d. Proposed measures to reduce or control light and glare impacts, if any:
Outdoor lights with sharp cut -off features will be deflected, shaded and focused away
from adjoining properties. The landscape buffer and berm will block on -site lights from
adjacent residential and park areas.
20
12. Recreation
a. What designated and informal recreation opportunities are in the immediate vicinity?
The SeaTac Park is located directly to the north of the site. The Park will include trails,
activity areas, playfields, a museum, and other recreational facilities. The Park will be
jointly developed by King County and the Port of Seattle.
There is an existing signed bicycle route along 24th Avenue South.
b. Would the proposed project displace any existing recreational uses? If so, describe.
No, no recreational uses exist on the site. The employees of the proposed facility receive
only 30 minutes for lunch. While the SeaTac Park is located to the north of this facility,
there is no entrance to the Park on South 142nd Street. Most of the recreation facilities
will be located to the north end of the Park. This location, combined with the steep
topography, and limited access, will make access to the Park for Boeing employees almost
impossible to achieve during a 30 minute lunch break.
As part of the basic building program, the Spares Distribution Center will provide an
employee health and fitness area equipped with stationary bicycles, weight training
equipment, showers and lockers. This area will be open to all facility employees on a
membership basis. Showers and lockers will also be available to those employees not
wishing to purchase a membership, but who wish to jog or bicycle in the area during off
hours.
c. Proposed measures to reduce or control impacts on recreation, including recreation
opportunities to be provided by the project or applicant, if any:
The sidewalk areas are being planned with pedestrian enjoyment as a goal. Interpretive
displays describing the species of plants groups in the landscape buffer will provide an
educational and pleasant walk along 24th Avenue.
13. Historic and cultural preservation
a. Are there any places or objects listed on, or proposed for, national, state, or local
preservation registers known to be on or next to the site? If so, generally describe.
No
b. Generally describe any landmarks or evidence of historic, archaeological, scientific, or
cultural importance known to be on or next to the site.
None
21
• •
c. Proposed measures to reduce or control impacts, if any:
None
14. Transportation
a. Identify public streets and highways serving the site, and describe proposed access to the
existing street system. Show on site plans, if any.
A traffic and parking analysis has been prepared for the proposed facility and is included
as Appendix E.
The site is served directly by 24th Avenue South, a two lane Collector Arterial and the
following streets and highways as classified by the King County Transportation Plan
Summary Report:
Freeway: SR -518, SR -509
Principal Arterial: SR -99
Minor Arterial: Military Road South
Des Moines Way South
S. 128th Street
S. 124th Street
Collector Arterial: 24th Avenue South
S. 136th Street
S. 142nd Street
S. 144th Street
b. Is site currently served by public transit? If not, what is the approximate distance to the
nearest transit stop?
The # 170 bus runs north and south on 24th Avenue South turning east and west on South
144th Street directly in front of the site.
c. How many parking spaces would the completed project have? How many would the
project eliminate?
The completed project will have 311 parking spaces. No spaces will be eliminated. The
attached traffic study shows that 289 spaces will be required at full operation, leaving an
excess of 22 spaces.
22
• •
d. Will the proposal require any new roads or streets, or improvements to existing roads or
streets, not including driveways? If so, generally describe (indicate whether public or
private).
No new roads or streets will be required for this proposal. As indicated below and
described in the Traffic Study, certain existing intersections in the area are currently
congested and in need of improvement without this project. These intersections include:
South 154th Street and 24th Avenue South where improved signal timing and a
left turn lane is already needed on 24th Avenue South.
Des Moines Memorial Drive and South 144th Street where a traffic signal is
already needed to improve the level of service.
Des Moines Memorial Drive /SR -518 Westbound Off -Ramp where delay for
westbound traffic are currently experienced.
SR -99 at S. 154th Street which already operates at LOS F due to a long cycle
length and limited land capacity on 154th.
SR -99 /SR -518 eastbound on -ramp where LOS E delays are already experienced
for left -turns due to limited gaps in northbound traffic.
The traffic impact from the proposed facility is described in Appendix E, and is expected
to represent 12.5% of the total PM peak hour traffic at 24th Avenue S. /S. 154th Street.
The impacts at the other intersections range from 5.5% of the PM .peak hour volume at
SR -99/S. 154th Street to 2.6% of PM peak hour volume at Des Moines Memorial
Drive /SR -518. Boeing is proposing to contribute to intersection improvements, at an
amount commensurate with project impacts, at the two intersections within the control
of the City of SeaTac: 24th Avenue S. /S. 154th Street and Des Moines Memorial Drive /S.
144th Street.
e. Will the project use (or occur in the immediate vicinity of) water, rail, or air
transportation? If so, generally describe.
The project site is directly north of SeaTac Airport but will not utilize air, water or rail
transportation.
23
• •
f. How many vehicular trips per day would be generated by the completed project? If
known, indicate when peak volumes would occur.
The Spares Distribution Center is projected to generate the following number of daily and
p.m. peak hour employee vehicle and truck trip ends:
PM Peak In
PM Peak Out PM Peak Total Daily
Employees 67
Trucks 4
TOTAL 71
g.
223 289 606
10 14 185
233 303 791
The peak hour for site traffic is expected to occur during the change between work shifts
1 and 2, between 3:00 and 4:00 p.m. Project trip generation during the p.m. peak hour of
adjacent street traffic would amount to truck traffic only with approximately 13 vehicle
trip ends. For a worst case analysis, the traffic study added peak project trips to the 4:00-
5:00 p.m. peak hour traffic on the local street system.
Proposed measures to reduce or control transportation impacts, if any:
The traffic study identifies specific intersections needing improvements without the
proposed project, and quantifies the impacts expected from the project. As noted above
in Section 14. d., Boeing is proposing to contribute to intersection improvements, at an
amount commensurate with project impacts, at the two intersections within the control
of the City of SeaTac: 24th Avenue S. /S. 154th Street and Des Moines Memorial Drive /S.
144th Street.
15. Public services
a. Would the project result in an increased need for public service (for example: fire
protection, police protection, health care, schools, other)? If so, generally describe.
The additional development on the site could create an increased need for fire and police
services. However, Boeing has taken the following steps to minimize impacts on local
services: (1) The building fire protection system is designed to Highly Protected Risk
Standards to control fire hazard; (2) Boeing has its own Hazardous Materials Response
Team who would respond to emergencies involving hazardous material spills on site; and
(3) Boeing will use a 24 -hour per day internal security patrol, a guard station, and fencing
to control criminal activities on site. These items, in conjunction with the general clean-
up of the site, should reduce the potential need for police and fire services.
24
• •
b. Proposed measure to reduce or control direct impacts on public services, if any.
Boeing will provide its own Hazardous Materials Response Team and internal security
force. Blackberries on site, and vacant buildings will be removed, and will help to
eliminate potential fire and crime locations.
16. Utilities
a. Utilities currently available at the site:
Sewer, water, electricity, natural gas.
b. Describe the utilities that are proposed for the project, the utility providing the service,
and the general construction activities on the site or in the immediate vicinity which
might be needed.
The proposed facility will utilize the following utilities: electricity provided by Puget
Power; water provided by the Seattle Water Department and Water District 125; natural
gas provided by Washington Natural Gas; sewer provided by the Rainier Vista Sewer
District; fire services provided by Fire District 11; and telephone provided by U.S. West
Communications.
Construction activities will include trenching for utility lines (sewer, water, gas, electricity
and telephone). Adjacent tie -ins to on -site utilities may include some minor traffic
disruption due to excavation needed to connect utilities, and these activities would be
scheduled to avoid traffic impact during peak flow periods.
C. Signature
The above answers are true and complete to the best of my knowledge. I understand that the lead
agency is relying on them to make its decision.
Signature:
Date Submitted:
Boe' g Com ' ems_ Air;,, ne Group, a division of The Boeing Company
25
PROPOSED BOEING SPARES FACILITY
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(FILE CZC0004-90)
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